I think it is not about leaving all the work to the planet, we can contribute by avoiding further polluting the atmosphere.

I agree with you, but I doubt that the way we actually (try) to do it is the right one, there is no real helpful data wich shows that we had made any progress with pressing our citizens from fossil fuels in transportation to electric, this is kind of crazy to point out the private vehicles and heating sources to change any of the numbers and let the industry go on in the same way like bfore.
I´m working with energy (nuclear and renewable and hydrogen) for more than 35 years now, leading several international companies as a CEO, Chairman of the Board, and Head of project development so believe me I know what I´m talking about.

First and foremost we had to adapt some more efficient and better ways to produce our goods, because if the industry everywhere becomes cleaner then about 65% of the emissions are already reduced or at zero. If then the energy production for electricity or transportation fuels becomes more efficient and environmentally friendly we are at well over 90% from all this bad emissions.

After that, the vehicles and infrastructures of the military worldwide should be converted from heavy oil and diesel to hydrogen and we would be at almost 98%.
We here in europe could have had the complete individual traffic, the public transport, the transport system with trucks, ships and even airplanes running on hydrogen for 15 years, but it was not wanted, it cost us millions and some of our companies. And even today I don't really see much progress from where we had to stop then.